Two separate PV micro-grids (A and B) are at over 1km apart. We want to connect them so that they can support each other, particularly at night, when either A or B might shut down due to low battery. Assuming conductors can be specified that keep voltage drop within limits:
Would it be possible to connect the Quattros from AC OUT 2 (A/B) to AC IN 1 (B/A) as in first figure attached if (i) 'AC ignore' enabled on AC IN 1 (ii) no feeding in from AC IN 1 (A/B) back to AC OUT 2 (B/A) and (ii) no charging of battery from AC IN 1?
Or would a more feasible approach be to isolate one of the Quattros (e.g. A) from the AC loads using contactors and a PLC, to allow the other Quattro (B) to support the AC loads in micro-grid A? (second figure)